检索
E-mail
RSS

作者投稿 主编审稿 专家审稿 远程编辑

热带海洋学报

• • 上一篇    

河口近海N2O的分布特征及微生物代谢驱动机制

洪义国1，张宝善1，吴佳鹏1，龙爱民2, 3   

  1. 1. 广州大学大湾区环境研究院, 珠三角水质安全与保护教育部重点实验室, 广东 广州 510007;

    2. 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东 广州 510301;

    3. 中国科学院大学, 北京 10049

  • 收稿日期:2024-12-07 修回日期:2025-01-06 接受日期:2025-01-07
  • 通讯作者: 洪义国
  • 基金资助:

    国家自然科学基金(42276130; 42476141); 广东省粤穗联合基金重点项目(2023B1515120029); 广州市科技计划项目(2025A03J3103)

Distribution characteristics and microbial metabolic driving mechanisms of N2O in estuarine and coastal waters

HONG Yiguo1, ZHANG Baoshan1, WU Jiapeng1, LONG Aimin2, 3   

  1. 1. Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou 510007, China;

    2. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China;

    3. University of Chinese Academy of Sciences, Beijing 100049, China

  • Received:2024-12-07 Revised:2025-01-06 Accepted:2025-01-07
  • Contact: HONG, Yiguo
  • Supported by:
    National Natural Science Foundation of China (42276130; 42476141); Basic and Applied Basic Research Foundation of Guangdong Province (2023B1515120029); Science and Technology Planning Project of Guangzhou (2025A03J3103)

PDF (PC)

赞

摘要： 河口近海区域作为陆地与海洋生态系统的交汇点，其在氧化亚氮（nitrous oxide，N2O）的生物地球化学循环中扮演着至关重要的角色。N2O作为一种强效温室气体，其在河口近海的分布特征和微生物代谢驱动机制对全球气候变化具有显著影响。本文综述了河口近海区域N2O的分布特征，N2O释放的主要微生物代谢途径（硝化过程、硝化细菌反硝化过程、不完全反硝化过程、硝化作用耦合反硝化过程），N2O产生与消耗过程的测定方法以及N2O释放的环境影响因素。对河口近海N2O生物地球化学循环的研究有助于我们制定有效的管理策略，减少N2O排放，保护全球气候具有重要意义。

关键词: 氮代谢, N2O, 生物地球化学循环, 河口近海

Abstract: Estuarine and coastal waters, serving as the interface between terrestrial and marine ecosystems, play a pivotal role in the biogeochemical cycling of nitrous oxide (N2O). The potent greenhouse gas has a profound impact on global climate change due to the distribution characteristics and microbial metabolic mechanisms of N2O in estuarine and coastal waters. In this paper, we reviewed the distribution characteristics of N2O in estuarine and coastal regions, the principal microbial metabolic pathways contributing to N2O emissions, including nitrification, nitrifier denitrification, incomplete denitrification, and the coupling of nitrification with denitrification, as well as the methodologies for assessing N2O production and consumption, and the environmental factors that influence N2O emissions. Understanding the biogeochemical cycling of N2O in estuarine and coastal waters is essential for devising effective management strategies to mitigate N2O emissions, thereby protecting the global climate.

Key words: nitrogen metabolism, N2O, biogeochemical cycle, estuarine and coastal waters